PCM modulations 92

Time division switching unit 93

Signal processing 94

SDR Transmission/Reception 95

Digital communications 96

Fibre optics communications 97

Compact optical fibre fusion splicer 98

Mechanical Splice 98

Measurement with OTDR 98

Implementation of aPassive Optical Network (PON) 99

Antenna Trainer 100

DTV and Satellite TV 101

Hyperfrequency waves 102

Telecommunications

91

ELECTRICAL ENGINEERING

ELECTRICAL ENGINEERING

PCM Transmission/Reception

• Global image of a digital transmission.• Verification of Shannon’s Theorem.

• Study of:- Adaptation and filtering.- Sample and hold.- 8-bits A/D conversion.- //-serial conversion and serial-// conversion.- 8-bits D/A conversion.- Filtering and adaptation.

>

Experiments - EFD 061 040>

>

Functions of the transmitter Impendance matching, filtering, sample and hold, 8-bits A/D conversion , //-serial conversion.

Functions of the receiver Serial-// conversion, D/A conversion, sommation, filtering, adaptation.

Dimensions (mm) 300 x 240 x 100 (l x h x d).

Weight 1 kg.

A manual of experiments is supplied with the monitors.

Reference Description QuantityEFD061000 Transmitter monitor. 1

EFD062000 Receiver monitor. 1

EFD061040 Teacher’s manual 1

EFD061050 Student’s manual 1

ERD037782 Bag of security stackable patching cords (several lengths and colours) 20 of 2 mm and 5 of 4 mm. 2

PMM062180 Symmetrical Power Supply: +/-15 V, 1A. 1

(We suggest the composition of the package, for special configuration, please ask)

Studied topics

Highlights

Technical characteristics - EFD 061 000 and EFD 062 000 - PCM Transmission/Reception

Package EFD 061 C : PCM Transmission/Reception

TELECOMMUNICATIONS

92 Tel. + 33 1 30 66 08 88

TELECOMMUN

ICATIONS

Order by phoneMonday to Friday from 9 am to 12.30 pm and 2 pm to 6 pm.

Tel.: + 33 1 30 66 08 88

Time division switching unit

• Experimental study of current telephone exchange(2 Mbit/s PCM).

• Control software operating with Windows®.Test points enable the display all fundamental signals.

• Speech coding, 64 kbits/s.• Study of a time division switching unit. • Telephone connections between subscribers in local mode.

• Base band digital transmission. • Control of common channel.

>

Experiments - ETD 500 040 - Introduction to time division switch>

Package ETD 500 B: Introduction to time division switch>

FunctionsAllocation to a subscriber ’s handset number, Allocation of a tax level to a subscriber (fixed price, depending on duration, toll-free N°...).

Visualization(with connectors or LED)

2 Mbits clock. Top writing in TCM.IT address counter. Top writing in the outgoing PCM.Address multiplexer control. Incoming PCM / Outgoing PCM.

C/C++ compiler New services (automatic recall, double call management…).

Power supply External power supply, 24 Vdc.

Dimensions (mm) 350 x 290 x 60 (l x h x d).

Weight 1,5 kg.

Exp. 1 Speech coding, 64 kbits/s.Exp. 2 Study of a time switching unit with downstream control.Exp. 3 Telephone connections between subscribers in local mode.Exp. 4 Digital transmission in baseband and common channel signaling.

Reference Description QuantityETD500000 Time division switching module in PVC case, 4 handsets. 1

ETD500100 Control software operating with Windows 9x, XP, NT and C and C++ compiler. 1

ETD500010 Technical guide. 1

ETD501000 Set of accessories: 4 phone handsets with their cables RJ11, 1 intercom cable RJ9 1

ETD500030 Reference manual: Principles of time division switching. 1

ETD500040 Manual of Experiments. 1

EGD000003 Serial cord, DB9/DB9 F/F X modem. 1

EGD000008 12 Vdc/4,2 A power supply, with jack connector. 1

PEM061600 Set of 10 2-mm stackable patch cords, red, 50 cm. 1

PED010021 BNC lead, 1 m, 50 Ohms. 3

(We suggest the composition of the package, for special configuration, please ask)

Studied topics

Highlights

Technical characteristics - ETD 500 000 Time division switching unit

TELECOMMUNICATIONSELECTRICAL ENGINEERING

93www.didalab.fr

TELECOMMUN

ICATIONS

TELECOMMUNICATIONSELECTRICAL ENGINEERING

94

TELECOMMUN

ICATIONS

Technical characteristics - ETD 410 000 - Study of different applications based on signal processing on DSP>

Experiments>

Package ETD 410 B: “Signal Processing with FIBULA Graphic”>

Mother board (processor with fixed point)

Dual core DSP, specialized in audio.

Inputs2 x ADC, 10 bits 0 – 10 Msa/s on BNC 50, CODEC 8 K at 96 kHz (16 to 24 bits), microphone input and line gain -34 to +12 db, 2 TTL inputs.

Outputs 2 x DAC, 10 bits 0 – 20 Msa/s on BNC 50, CODEC 8 K at 96 kHz (16 to 32 bits), line and stereo headphone outputs,2 TTL ouptuts.

Examples of available macros(FIBULA software, more than 250 blockfunctions in libraries)

Inputs-Outputs (analog, TTL), Signal generators, (sine, square, triangle, complex, Gaussian noise…), Filters (IIR, FIR, Hilbert, recursive, non recursive…), Matrix (matrix sums, discrete Fourier series, matrix product…), Telecommunications, (analog modulatons, digital modulations, ASK, PSK, FSK, QAM, coding AMI, NRZ, Manchester, fading…), Floating point, (multiplication+sum, sign inversion, square root…), etc.

Environment PC with Windows XP pro, Vista, Seven, USB interface.Power supply 240 V with external plug, 9 VAC.

Exp. 1 Shannon’s theorem, sampling and quantification.Exp. 2 Fourier Series, FFT spectral analysis.Exp. 3 Digital filters, recursive non-recursive.Exp. 4 Process and random signals.

Highlights

Signal processing with FIBULA Graphic

Reference Description Quantity

ETD410000Signal processing based on a DSP (dual core 2 x 200 Mips) with 2 audio inputs/outputsAnd 2 broad band inputs/ouptuts.

1

ETD410100 FIBULA, programming software, in real time, with graphic functional blocks. 1ETD410010 Technical manual with examples. 1EGD000001 9-VAC power supply, 2 A. 1EGD000006 USB lead, type AA. 1

ETD410200 Set of accessories (microphone, 2 speakers, 2 BNC stoppers(50 Ohms). 1

PEM010021 BNC/BNC lead, male/male, 1m, 50 Ohms. 2PEM063960 Set of 2 BNC “T”. 1ETD410500 Carrying case. 1

• User friendly. • Analog inputs/outputs up to 20 Msa/s. • Programmation with diagram blocks. • Dual core DSP (2 x 200 MIPS).• Graphic compiler• Real time virtual Oscilloscope (8 chanels)• More than 250 macro functions available. • Possibility for the user to create his own functions.

• Signal Theory.Sampling, quantification, FFT, IIR or FIR filters, random signals, etc.

• Introduction to digital transmissions.Base band, ASK, PSK, QAM modulations, multiplexing, etc.

• Theory of information and coding.Channel coding, FEC, Signal to Noise ratio measurement, information flow, etc.

Studied topics

24 bits 2 x 200 MIPS RAM 2 x 92 K + 64 K 24 bits arithmetic operation on 48 bitsSDRAM 32 Mb 3 timers 1 USB port 1 serial port

NEW

Fax + 33 1 30 66 72 20

TELECOMMUNICATIONSELECTRICAL ENGINEERING

95

TELECOMMUN

ICATIONS

Optional extra for ETD410B

• The set of modules ETD 411 xxx has been especially developed for the study of analog and digital communications, with HF and VHF coaxial Hertzian transmission.

• The modules use the “SDR, Software Defined on Radio” technology.• Each module has a 40-points connector to be connected with the ETD 410 000 module.• The ETD410 000 transposes the HF and VHF bands to intermediate frequencies (0 to 96 kHz) in reception modeand from 0-to- 96 kHz intermediate frequencies to HF frequencies in transmission mode.

• We use the Fibula G software to study the different kinds of analog and digital modulations (see page before).

ETD 411 100: SDR Transmission Module HF 27 MHz (IQ modulator)>Transmission Transposition Module HF 27 MHz.

Frequency range: from 27,000 to 27,400 MHz.

Transmitting power (max): 10 mW.

IQ Modulation by DSP with Fibula G graphic software,-> Analogue: AM, FM, BLU,-> Digital: ASK, PSK, FSK, QAM…

Coding: AMI, RZ, NRZ, Manchester...

Conversion with 24-bits 192-kHz CODECS

LF/HF Transposition by “perfect mixer”.

ETD 411 300: VHF transposition reception module>VHF Reception Module VHF 88/108 MHz, IF /IQ transposition.

HF/BF Transposition HF/BF by “perfect mixer”.

IQ Demodulation by DSP with Fibula G graphic software,-> Analogue: FM, mono, stereo,-> Digital: RDS.

ETD 411 200: SDR Reception Module, HF 27 MHz, Long Waves,Short Waves, IQ demodulator

>

LF and HF 27 MHz Reception module, FI transposition by IQ.

Frequency range:-> LF, 150 to 280 kHZ,-> MF, 3 500 to 3 800 kHz,-> HF, 27,000 to 27,400 MHz.

Transmitting power (max): 10 mW

IQ Demodulation by DSP with Fibula G graphic software,-> Analogue: AM, FM, BLU,-> Digital: ASK, PSK, FSK, QAM…

Coding: AMI, RZ, NRZ, Manchester...

Conversion with 24-bits 192-kHz CODECS.

didalab@didalab.fr

TELECOMMUNICATIONSELECTRICAL ENGINEERING

96

TELECOMMUN

ICATIONS

Studied topics

Digital communications

• All the different stages of a transmission system.• Inputs: microphone, LF generator or TTL.• Several switches to select the transmitteror the receiver structure.

• Many means of transmission.

• ASK, FSK, BPSK, DPSK, QPSK and QAM Modulations.

Technical characteristics - ETD 038 300 - Digital communications>

Experiments - Digital communications>

Package ETD 038 300: Digital communications - type EC796>

Inputs Microphone, LF generator, TTL signals.

Sampling 7.5 kHz/8 bits.

Modulators ASK, FSK, BPSK, DBPSK, QPSK, DQPSK, QAM.

Transmission means Coaxial cable, two-wire, infrared, radio and optical fibre.

Power supply 230 V AC 50 Hz/0.5 A.

Dimensions (mm) 400 x 100 x 280 (l x h x d).

Weight 2.8 kg.

Exp. 1 A/D and D/A conversion, sampling and quantification. Exp. 10 DPSK modulation and demodulation.Exp. 2 ASK modulation and demodulation. Exp. 11 QPSK modulation and demodulation.Exp. 3 FSK modulaton, demodulation with dual filters (DFD, Dual Filter Detector). Exp. 12 DQPSK modulation and demodulation.Exp. 4 Comparison between ASK and FSK (DFD). Exp. 13 QAM modulation and demodulation.Exp. 5 Study of a PLL. Exp. 14 Comparison between phase modulations.Exp. 6 FSK demodulation with PLL. Exp. 15 Eye diagram.Exp. 7 Comparison between DFD-detected FSK and PLL-detected FSK. Exp. 16 Constellations of phase modulation.Exp. 8 Carrier recovery. Exp. 17 Comparison of the speed of transmission for the different modulations.Exp. 9 BPSK modulation and demodulation.

Reference Description QuantityETD038300/1 Transmitter module. 1

ETD038300/2 Receiver module. 1

AccessoriesHeadphone and dynamic microphone, antenna connection cables, optical fibre PMMA with FSMA connectors, diam-4 mm patch cords, BNC/BNC lead, manual of experiments.

1

(We suggest the composition of the package, for special configuration, please ask)

Highlights

Tel. + 33 1 30 66 08 88

TELECOMMUNICATIONSELECTRICAL ENGINEERING

97

TELECOMMUN

ICATIONS

TRANSMITTER

8 inputs

LF generator: sinusoidal, triangular or square (internal) signal.2 analog inputs(75 Ohms) (with DC coupling and AC coupling).1 microphone input.Digital input, Inverted digital input, Digital input permanently on "1".Digital switch "1" / "0".

2 independent channelsOne of the stage can be configured with a feedback circuit in order to maintain a stable and unalterable optical power no matter what the external conditions are (temperature, ageing...).

6 optical outputs 6 cyclically selectable photoemitters: 526-nm Led, 590-nm Led, 660-nm Led, 850-nm Led, 1300-nm Led, 650-nm laser diode.Two photoemitters may be activated at the same time.

1 milliammetter It measures the polarization current flowing through the chosen photoemitter.1 fault simulatorRECEIVER4 optical inputs 4 kinds de photodetectors: 1 mm Si PIN, 2.5 mm Si PIN, 1 mm InGaAs PIN, 0.1 mm Ge APD.

1 analog channel Made of 2 serial power stages. gain of each: 20 dB (total gain: 40 dB).The signal block possesses a switch to select the type of coupling, DC or AC, applied to the first amplifier input and to the analogue channel output section.

1 digital channel The amplitude of the channel output may be selected as either TTL level or RS-232 level.1 optical power meter Measures the optical power (relative or absolute).

Four different measuring modes

Analog (sensitivity 0.1 dB).Digital (sensitivity 0.1 dB).1 kHz (sensitivity 0.01 dB).DC (sensitivity 0.01 dB).

1 fault simulator

Outputs 1 analog output (high or low impedance).1 digital output (TTL or RS232).1 speaker or headphone output.

Fibre optics communications

• 8 independent inputsBuilt-in LF generator, analog and digital inputs, switches, microphone.

• 6 cyclically selectable photoemitters, different wavelengths, WDM application.

• Embedded milliammeterMeasures the polarization current flowing through the chosen photoemitter.

• 4 kinds of photodetectors1mm Si PIN, 2.5 mm Si PIN, 1mm InGaAs PIN, 0.1 mm Ge APD.

• Optical power meter.Resolution: 0.1 dB or 0.01 dB.

Technical characteristics - ETD 038 600 - Fibre optics communications>

Experiments>

Package ETD 038 600: Fibre optics communications - type EF970-E>

Measuring optical power.Measuring the attenuation of an optical fibre. Insertion losses.Influence of ambient light.Connecting optical fibre using ST-ST adapters.Measuring repeatability.Study of photoemitters (characteristics, P/I and V/I, optical stability, modulation frequency).Study of photodetectors (spectral dependence, inverse voltage, bandwidth).Signal Transmission (analog, audio, video, digital, RS232).

Reference Description QuantityETD038600/1 Transmitter monitor. 1ETD038600/2 Receiver monitor. 1

Technical guide. 1Manuel de Experiments. 1

(We suggest the composition of the package, for special configuration, please ask)

Highlights

www.didalab.fr

> EFO 200B: Implementation of an optical fibre fusion splicer

TELECOMMUNICATIONSELECTRICAL ENGINEERING

98 Tel. + 33 (0)1 30 66 08 88

TELECOMMUN

ICATIONS

Compact optical fibre fusion splicer

• Skills acquisition for the fibre preparation to fusion / splicing.• Essential and much used tool for the connection technicians.• Automatic fibre aligning.

• Manipulation and fibre preparation. • Cleaning, stripping and cleaving.• Fusion, fibre protection.• Loss estimation.

Reference Description Quantity

EFO2010003-axis optical fibre fusion splicer, (with heating unit, loss estimation) , optical fibre stripper,optical fibre cleaver, carrying case.

1

Heat shrink sleeves. 50

Studied topics

Highlights

Mechanical splice

> EFO 400B: Implementation of an optical splice

• To master optical fibre passes by a stage ofmanipulation (preparation, connection, cleanliness…).

• Technical understanding.• Manipulation skills.

• Fibre manipulation and preparation. • Cleaning, stripping and cleaving.• Mechanical splice setting, transparent, reusable for fibres connections.

• Use of the red laser to find mechanical stresses and help aligning.

Reference Description Quantity

EFO401000 Tool box for mechanical splice with stripper, cleaver tools, red laser, cleaning kit. 1

EFO402000 Transparent mechanical splice kit (50 pieces). 2

EFO001000 Optical fibre, 900 µm, with SC/APC connector, L=10 m. 1

> EFO 300B: Measurement with OTDRReference Description Quantity

EFO301000 OTDR (Optical Time Domain Reflectometer), wavelengths: 1300 and1550 nm (single mode). 1

EFO302000 150-m launch Fibre reel, with SC/PC connector. 2

Studied topics

Highlights

Measurement with OTDR

• Optical fibre characterization with signal reflection.• Analysis of all the fibre’s events (connectors, fusion,splices, etc).

Studied topics

Implementation of a Passive Optical Network (PON)

This pedagogical bench is not conceived to opticalfibre connection but to study and implement a sin-gle mode optical connection. It is a completepackage, putting the student in a real situation. It isalso used for the cleanliness learning, essential tofibre manipulation, the measurement instrumentcalibration, optical measure according to the sys-tem’s wavelength, implementation of an opticaltransmitter/ receiver couple and of an IP camera.

• Manipulation and cleaning of the telecom singlemode optical connectors.

• Calibration of the power meter.• Absolute power ratio (dBm) and relative powerratio(dB).

• Sensitivity threshold search or the receiver withthe adjustable attenuator.

• Measurement of the max authorized loss. • Study of a WDM bidirectional connection.

Package EFO 100 B: Implementation of a IP/OF connection>Reference Description Quantity

EFO100000Pedagogical scenario module.3 application decks for 3 scenarios: (Optical loss, power meter, Optical balance,WDM bidirectional connection).

1

EFO101000 IP/OF converter, wavelengths: Tx1550, Rx1310. 1

EFO102000 IP/OF converter, wavelengths:Tx1310,Rx1550. 1

EFO103000 Optical power meter. 1

EFO104000 Adjustable optical attenuator. 1

EFO105000 1300/1550 Multiplexer with SC/APC connectors. 2

EFO106000 Set of: 5 * SC/APC-SC/APC cords, simplex single mode, LSZH yellow 2.8-mm jacket, 2-m length. 1

10* SC/APC crossings, simplex single mode, with flange and ceramic sleeve. 1

EFO107000 Connector cleaner. 1

EFO108000 IP camera. 1

EFO100020 Practical works. 1

EGD000029 Carrying case. 1

(We suggest the composition of the package, for special configuration, please ask)

Studied topics

Highlights

TELECOMMUNICATIONSELECTRICAL ENGINEERING

99www.didalab.fr

TELECOMMUN

ICATIONS

NEW

This package can be adapted to our VDI laboratories (cf pages 108 to 113).

TELECOMMUNICATIONSELECTRICAL ENGINEERING

100 Tel. + 33 (0)1 30 66 08 88

TELECOMMUN

ICATIONS

Antenna Trainer

Technical characteristics: ETD 600 000 - Antenna Trainer

Practical works>

Pack ETD 600 B: Basic package “Antenna Trainer”>

RF Generator frequencies 500 MHz, 2 GHz, 10 GHz.

Power 10 mW (approx).

Output impedance 50 Ohms.

Modulation frequency 1 kHz.

Receiver sensitivity -50 /-10 dbm, Receiver angle : 0° to 360°.

TP 1 ½-wave Antenna. TP 6 Loop antenna (rectangular, diamond, circular).TP 2 Folded dipole antenna. TP 7 Helical Antena.TP 3 ¼-wave Antenna. TP 8 Spiral Antenna.TP 4 Radial Antenna. TP 9 Patch Antenna.TP 5 Yagi Antenna. TP 10 Microstrip planar array Antenna (rectangular).

Reference Description Quantity

ETD600000Base for transmission antenna, power supply RF 500 MHz / 2 GHz / 10 GHz, 10 mW, 50 , FM 1 kHz.Base for reception antenna, -10/-50 dBm, 0°/360° rotation, RS232 interface.

1

ETD610000 Set of transmission antenna, for polarized waves, horn, dipole, ¼-wave, Yagi… 1

ETD620000 Set of reception annena, horn, dipole, Yagi, … 1

Supplied with accessories: CDROM with control software, manual for Practical works, leads 1

>

• Study of several kind of antenna: Yagi, spiral,diamond ,helical, dipole, radial, patch, micros-trip, circular, rectangular…

• Complete package: transmission and reception,• Supplied with CDROM.

Highlights

(We suggest the composition of the package, for special configuration, please ask)

TELECOMMUNICATIONSELECTRICAL ENGINEERING

101www.didalab.fr

TELECOMMUN

ICATIONS

DTTV & satellite TV (DVB T - T2 - S - S2)

Practical Works: Digital Terrestrial and Satellite TV>

Pack ETV 100 C: ETV 100 C: Complete Package for the study of DVB-T and satellite broadcasting, including:>

Introduction to the DTTV (DVB-T). Wired transmission in DVB-T. Hertzian terrestrial transmission DVB-T.COFDM transmission for DVB-T. Signal strength. Reception diagram in DVB-T.

Equipment architecture. Amplifier. Satellite reception (DVB-S).

Reference Description Quantity

ETV100000HDMI Source, Software for the audio and video peripherals, 21.5’’ HD screen, 1680*1050, loud-speakers,embedded Webcam, power supply.

1

ETV110000 DVB-T digital modulator, high definiftion, (EN-206), BNC output, supplied with HDMI lead. 1

ETV110200 Full HD HDMI Hub, 3 HDMI leads. 1

ETV111000 Full HD television, 48’’, BNC/TV transfer, BNC ‘’T’’. 1

EMD038220 Field strength meter, TVB-T/T2/C/C2/S/S2 (HD Ranger Lite) BNC input, protective cover. 1

ETV101000 DTTV antenna with tripod and RG58 coaxial connecting lead, 10m, 75Ω BNC. 2

ETV102000 Satellite antenna kit, with tripod, and RG58 coaxial connecting lead, 10m, 75Ω BNC, compass. 1

ETV103000 100-m cable, RG58, with BNC connections. 1

ETV104000 Set of accessories: (2 BNC ‘’T’’, 3 BNC 20 dB dimmers, 3 1-m BNC leads, RF amplifier). 1

ETV100040 User and practical work manual. 1

• HDMI DTTV Transmission. • Insertion of a private channel in the DTTV package.• Multistreams measure and decoding.

• Transmission standards.• Transmission encodings.• COFDM.• Wired transmission .• Transmission in a clear channel.• Reception. • Measures of Quality (Power, MER, CBER, VBER).• Code rate effect, guard intervals, FFT on the flow.

Studied topics

Highlights

(We suggest the composition of the package, for special configuration, please ask)

NEW

ELECTRICAL ENGINEERING

TELECOMMUNICATIONS

102

TELECOMMUN

ICATIONS

Hyperfrequency waves

• Complete package, supplied in carrying case.• SWR Meter (optional extra).• Bolometric bridge (optional extra).

• Gunn oscillator.• Detector and Modulator.• Propagation modes, wavelength and phase speed inside wave guide.

• Bandwidth of a resonating cavity.

Technical characteristics - PED 022 200 SWR Meter>

Experiments - Hyperfrequency waves in wave guide>

PED 022 170: Hyperfrequency waves in wave guide>

PED 022 200: SWR Meter>

Function Measure of the standing waves ratio.

Input frequency1000 Hz, compatible with the hyperfrequency modulator unit ref PED 022 170.

Range 70 dB 2-dB and 10-dB steps.

Bolometric bridge

Technical characteristics - PED 022 180 Bolometric bridge>

PED 022 180: Bolometric bridge>

Function Power measuring device by thermocouple.

Connection Connects to hyperfrequency system with coaxial adaptor included in set.PED022170.

Exp. 1 Gunn oscillator: study of an hyperfrequency source. Operating by negative resistance, emission spectra, specificity…Exp. 2 Detector and Modulator: learning theory and operating of a PIN diode modulator and of a crystal detector.

Exp. 3Propagation modes, wavelength and phase speed inside wave guide: experimental study of hyperfrequency wave propagation characteristics in free space and in wave guide.

Exp. 4 Bandwidth of a resonating cavity: experimental verification of the relation between Q and bandwidth of resonating cavity.Exp. 5 Power measure: study of the different possibilities of power measure, evaluation of precision.Exp. 6 Measurement of impedance: determination of unknown impedances by Smith's abacus.Exp. 7 Standing waves measurement: learning how to measure a stationary waves ratio by SWR meter or measuring slotted line.Exp. 8 Attenuation measurement: learning how to measure damping of components in an hyperfrequency system.Exp. 9 Basic propeties of a dispersive coupler: study of properties, coupling coefficient and directivity.Exp. 10 Study of Waveguide Hybrid-T: basic principle, measuring method of the characteristics of hybrid "T".

Reference Description QuantityPED022170 Hyperfrequency unit with Gunn oscillator, adapter with screw, slotted line. 1

PIN modulator. 1

Crystal support, wavemeter, variable attenuator, wave guide, adapted load, directive coupler, hybrid "T". 1

Coaxial/transmitter guide, horn antenna, reflector with support, guide support, supply. 1

Studied topics

Highlights

SWR Meter

Fax + 33 1 30 66 72 20